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Finding the Fourth Proportional to 312,124.68, 467,989.62 and 171,981.72

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Solution

The fourth proportional to 312,124.68, 467,989.62 and 171,981.72 is: 257,863.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,124.68 : 467,989.62 = 171,981.72 : x
  2. Step 2: Convert to fraction form
    312,124.68/467,989.62 = 171,981.72/x
  3. Step 3: Cross multiply
    312,124.68x = 467,989.62 × 171,981.72
  4. Step 4: Simplify right side
    312,124.68x = 80,485,659,789.75
  5. Step 5: Solve for x
    x = 80,485,659,789.75/312,124.68
  6. Step 6: Final answer
    x = 257,863.81

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.